The ONLY Non Reciprocating Side Charger on the market to accept ANY standard MILSPEC BCG — Just change out cam pin with the modified cam pin we provide

Adjustable tension slide lock on charging handle

Rear dust cover trap door that seals shut when mated with lower

Manufactured to MILSPEC on state of the art CNC equipment for consistent quality parts and exacting tolerances

Save money by building your own AR-15 rifle from the ground up exactly the way you want it configured

Designed to match lines with New Frontier Armory C-4 Billet Lower and most forged AR-15 Lowers

Ejection port cut to eject large calibers up to .458 SOCOM shells

For 9mm AR-15's that use Colt Style Magazines, the LRBHO (Last Round Bolt Hold Open) feature is dependent on the magwell block adapter. For example, the Hahn Bottom Magwell Block or Hahn Dedicated Magwell Block will hold the bolt open after the last round. The Hahn Top Magwell Block will not hold the bolt open after the last round, as it does not have the feature in the block. The same principle applies to other magwell blocks. The LRBHO (Last Round Bolt Hold Open) feature is found on the Magwell Block.

For 9mm AR-15's that use Glock Magazines, if you want the LRBHO (Last Round Bolt Hold Open) feature, you will want to use the C9-NRSC receiver: